//
//  Strategy.h
//  策略模式
//
//  Created by flannery on 2018/12/18.
//  Copyright © 2018年 flannery. All rights reserved.
//

#import <Foundation/Foundation.h>

@protocol Strategy
-(int)doOperationNum1:(int)num1 num2:(int)num2;
@end

@interface OperationAdd : NSObject <Strategy>
@end

@interface OperationSubstract : NSObject <Strategy>
@end

@interface OperationMultiply : NSObject <Strategy>
@end
